Arduino square wave generator up to 1Mhz

This is a simple square-wave generator that basically uses the TimerOne library allow you to generate a PWM signal at pin 9 in the range from about 5Hz to 1 Mhz, and you can adjust the duty cycle from 0 to 100%. Device is very simple to build and consist only a few components:
- Arduino nano microcontroller
- LCD Display
- Three pull Up resistors
- and three push buttons
The pulse generator has the ability to adjust the pulse repetition period using the buttons connected to digital inputs 6 and 7 of the Arduino. 13 input pin allows you to adjust the duty cycle. The duration and duty cycle readings are displayed on the first row of the LCD 16 × 2 indicator, and the frequency readings are displayed in the second row. The minimum step for adjusting the pulse repetition period is 1 μs, so the frequency will change discretely, for example, 1 μs is 1 MHz, 2 μs is 500 kHz, 3 μs is 333.333 Hz, and so on, and as the frequency decreases, the smoothness of its adjustment increases. This is quite impractical at higher frequencies but that is the price of simplicity. In one of my previous videos I have described the construction of a similar device but with the help of a specialized DDS chip that does not have these shortcomings and has a much larger range, but is more complex to build
To visualize the output signal I use small single- channel oscilloscope. Finally, the device is mounted in a suitable box, and it is another useful tool in the electronics laboratory.
Instructions, schematic diagram and Arduino Code at: www.hackster.i...
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by mircemk
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[@grigoreman7198]

Hi, nice project! Where can we find the code? The project no longer exists on the arduino page. Thank you!

[@MirkoPavleskiMK]

www.hackster.io/mircemk/diy-simple-square-wave-generator-up-to-1mhz-231375

[@grigoreman7198]

Thank you, you are a great man.

[@electronic7979]

Nice project

[@RAVI171175]

Very well made & nice project my friend. Keep it up with the DIY stuffs.

[@botak333]

Hi sir it can measure freq on 20-220volt sir??

[@alinbcu]

what is the maximum current suported? I think this cant be used for nothing, just educational purpose, but is good for kids to learn about waveforms, electronics and so on

[@karthikr3044]

Hi ,I was making the same and everything is working fine but the plus and minus buttons are not working,the duty button is working,I have checked so many times but I'm stuck.Can anyone suggest some solutions?

[@freemaxnetpro9091]

Thank you verry much sir, pleas help me How to adjust the frequency from 100 Hz to 1 kHz only.

[@sonusingheee537]

Sir i am trying to generate 20khz square wave on pin 9 and 10 using timerone library but condition is that pin 10 pwm is inverted to pin 9 as a synchronous way please tell me

[@deadadam666]

thanks , ive been looking for a way to get a 1mhz wave out of arduino to use as an input for a swinsid chip

[@KishanRandika]

Hello , How can get this frequency as the audio output ?

[@michaeljoshuamanallo1742]

Sir can you make it on a I2c LCD display??

[@yassinegaming9398]

Sir can you make a frequency receiver exactly like this But receives frequencies wirelessly and gives the value of the existing frequency?

[@sanoops3555]

What you mean by frequency receiver ?

[@poskoz]

Hello i would like to make a pfm pulse frequency generator, basically a logic function generator is it possible with arduino nano?

[@MirkoPavleskiMK]

Yes, it is possible with Arduino nano

[@poskoz]

@@MirkoPavleskiMK thanx a lot, have you got a link where i can learn how to do it?

[@luigimorelli6444]

Very nice!

[@ymara426]

1t hz

[@spectravet4542]

Nice simple project, thank you. You mention a video in which you describe a similar device using a DDS chip, but I've not been able to find it. Can you tell me which one it is, please?

[@MirkoPavleskiMK]

kzbin.info/www/bejne/q6HbkpRohtuErtE

[@spectravet4542]

@@MirkoPavleskiMK Thank you!

[@kelvynroberts9506]

I really appreciate your project and is inspiring me to develop a new one but in this one I pretend to amplify this square wave coming from arduino... Do you have any idea of an Amplifier which can ride signals in the range of 10Hz - 45KHz? Any idea??

[@MirkoPavleskiMK]

You can use a standard audio amplifier for this purpose

[@kelvynroberts9506]

@@MirkoPavleskiMK thank you.... but according to my understanding (correct me if I'm wrong) the transistors contained on the standard audio amplifier has poor gain on frequency above 20KHz ... however for my propose I need a stable gain on all range... have you ever test any standard for high frequency?

[@MirkoPavleskiMK]

@@kelvynroberts9506 Unfortunately you are right when it comes to higher frequencies, and I have not tested

[@bert32]

What scope do u use

[@MirkoPavleskiMK]

www.aliexpress.com/item/33021370646.html?spm=a2g0s.9042311.0.0.27424c4dpXRCv2